External counterpulsation apparatus



FIG. 1 is a front view of an external counterpulsation apparatus of the design according to this invention.

FIG. 2 is a side view of an external counterpulsation apparatus of the design according to this invention.

FIG. 3 is a rear view of an external counterpulsation apparatus of the design according to this invention; and,

FIG. 4 is a plan view of an external counterpulsation apparatus of the design according to this invention. 

The ornamental design for an external counterpulsation apparatus, as shown and described. 